Sugar-Sweetened Drinks Are Not Replacing Milk in Kids Diets

July 18, 2012

National data indicate that milk consumption has declined among children while consumption of sweetened beverages of low nutritional quality has more than doubled. Although this suggests that sugar-sweetened beverages may have replaced more nutritious drinks in children’s diets, a new study suggests that in fact changes in children’s milk consumption are not significantly related to changes in their consumption of sodas and flavored fruit drinks over time. The results are published online today in the Journal of the Academy of Nutrition and Dietetics.

“We found that children’s milk consumption did decrease between 5th and 8th grade, but the changes weren’t related to changes in their consumption of sweetened beverages,” reports lead investigator Reena Oza-Frank, PhD, RD, in the Center for Perinatal Research of The Research Institute at Nationwide Children’s Hospital and the Department of Pediatrics at the Ohio State University in Columbus, OH. “In addition, regardless of how much sweetened beverages children consumed, milk and 100% fruit juice were complements in children’s diets. Children increased or decreased their intake of both in tandem.”

Researchers studied beverage consumption among 7,445 students who were part of the Early Childhood Longitudinal Study, Kindergarten Class of 1998-1999 (ECLS-K), a nationally representative study of children from kindergarten to 8th grade. The children filled out a food consumption questionnaire in the 5th and 8th grades that included questions about how much and how frequently they consumed milk, 100% fruit juice, and sweetened beverages. Investigators compared the data to measure changes in consumption over time. The analysis accounted for demographic characteristics and socioeconomic status and factors such as public versus private school attendance, whether the child ate school lunch or breakfast regularly, and whether the child received free or reduced-price lunch at school. Other nutrition indicators included were changes in consumption of vegetables, fruits, and fast food.

Overall, children’s reported caloric drink servings per week fell significantly between 5th and 8th grade. Milk consumption fell while consumption of 100% fruit juice increased, regardless of sweetened beverage consumption. Milk consumption fell more among children who drank any sweetened beverages than among those who drank none. The decline in milk consumption was even larger among children who drank sweetened beverages daily; that group drank an average two fewer glasses of milk in the 8th grade than they had in the 5th grade. Children who drank sweetened beverages were more often male and white. Those who drank sweetened beverages daily more often attended public school, ate school lunch or breakfast regularly, and received a free or reduced price school lunch.

However, controlling for demographic and nutrition characteristics, changes in children’s milk and juice consumption were not significantly related to changes in their consumption of sweetened beverages over time, indicating that sweetened beverages did not replace other caloric beverages in children’s diets. Children who increased their milk consumption also increased their juice consumption over the three-year period, indicating that milk and juice are complements, not substitutes, in children’s diets. “Analysis of multiple subpopulations indicates that milk and juice consumption increased or decreased in tandem for most children,” says Dr. Oza-Frank.

Of concern, Dr. Oza-Frank notes, is that as children increase their intake of one high caloric beverage, they also increase their intake of others. “It’s important for [food and nutrition practitioners] to help children and families understand that caloric beverages, even those that are generally healthful, contribute to children’s total calorie intake and must be moderated as a part of a healthy diet,” she says.

The study was conducted by researchers from the Research Institute at Nationwide Children’s Hospital, Agnes Scott College, and Emory University and was funded by the National Institute of Child Health & Human Development.

In an accompanying video, Dr. Madeline Zavodny, professor of economics at Agnes Scott College, discusses the role of high calorie beverages in children’s diets.

Full text of this article is available to credentialed journalists upon request. Contact Eileen Leahy at 732-238-3628 or andjrnlmedia@elsevier.com to obtain copies. Journalists wishing to set up interviews with Reena Oza-Frank may contact her at 614-355-6625 or reena.oza-frank@nationwidechildrens.org. To interview Madeline Zavodny please contact her at 404-471-6377 or mzavodny@agnesscott.edu.

A video presentation featuring Dr. Madeline Zavodny, professor of economics at Agnes Scott College, and information specifically for journalists are located at http://andjrnl.org/content/mediapodcast. Excerpts from the video may be reproduced by the media; contact Eileen Leahy to obtain permission.

ABOUT THE JOURNAL OF THE ACADEMY OF NUTRITION AND DIETETICS The official journal of the Academy of Nutrition and Dietetics (www.eatright.org), the Journal of the Academy of Nutrition and Dietetics (www.andjrnl.org) is the premier source for the practice and science of food, nutrition and dietetics. The monthly, peer-reviewed journal presents original articles prepared by scholars and practitioners and is the most widely read professional publication in the field. The Journal focuses on advancing professional knowledge across the range of research and practice issues such as: nutritional science, medical nutrition therapy, public health nutrition, food science and biotechnology, food service systems, leadership and management and dietetics education.

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ABOUT THE ACADEMY OF NUTRITION AND DIETETICS The Academy of Nutrition and Dietetics (www.eatright.org), formerly the American Dietetic Association, is the world’s largest organization of food and nutrition professionals. The Academy is committed to improving the nation’s health and advancing the profession of dietetics through research, education and advocacy.

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About Nationwide Children's Hospital

Named to the Top 10 Honor Roll on U.S. News & WorldReport ‘s 2018-19 list of “Best Children’s Hospitals,” Nationwide Children’s Hospital is one of America’s largest not-for-profit freestanding pediatric health care systems providing wellness, preventive, diagnostic, treatment and rehabilitative care for infants, children and adolescents, as well as adult patients with congenital disease. Nationwide Children’s has a staff of more than 13,000 providing state-of-the-art pediatric care during more than 1.4 million patient visits annually. As home to the Department of Pediatrics of The Ohio State University College of Medicine, Nationwide Children’s physicians train the next generation of pediatricians and pediatric specialists. The Research Institute at Nationwide Children’s Hospital is one of the Top 10 National Institutes of Health-funded freestanding pediatric research facilities. More information is available at NationwideChildrens.org.